Paper manufacture



mental Dec. 2, 1930 N UNITED' STATES HAI WENZEL, OF HULDENSTEIN, NEARBITTEBFELD, GEBIANY PAPER HANUFACTUBE Application ledotober 17, 1929,Serial No This invention relates to apparatus for and methods ofmanufacturing paper, and with regard to certain more specific features,to rollers adapted to Abe used in couchings'press ing, glazing,calendering, wetting, coating,

and other similar operations.

Among the several objects of the invention may be noted the provision ofa roller of the class described which is characterized by the fact thatthe bandage (usually felt or other similar material) does not come looseor get out of place on the roller, the provision of a method forapplying said bandage to the roller so that it will not become loosened'17, during the manufacture of paper and the like; and the provision' ofapparatus of the class described which is simple in construction anddurable and efficient in operation. Other objects will be in partobvious and in part pointed out hereinafter. l

In prior constructions, paper rollers have been furnished with aspirally wound covering or bandage of felt or some other material.

. In spite of careful rolling, and tight fitting of the bandages uponthe rolls (generally by means of threads, wires, ropes `or the likeinserted into the body of the bandage), diiculty has been experienced inkee ing the bandages in place upon the rolls. his willy 3o frequentlyhappen after the roll has been in service for a short time only, andnecessitate shut-downs for repair or alteration.

The present invention, as pointed out hereinbefore in the objects,provides a roll wherein there is no tendency for such slipping to takeplace.

In the accompanying drawin s, in which are illustrated several of thevarious possible embodiments of the invention Fig. 1 is a cross sectionof one form of the invention as ap lied to a roll, the section beingtaken' su stantially perpendicularly to the axis of the roll;

Fig. 2 is a section similar to Fig. 1, showing a second embodiment ofthe invention;

. 400,288, and in Germany Septemberv 6 1928.

Fig. 3 is a section similar to Fig. 1, showinor a third embodiment ofthe invention; and Iig. 4 is a section similar to Fig. 1, showingJafourth embodiment of the invention. `orrespondin reference'charactersindicate correspon ing parts throughout the several views of thedrawings.

Referring now more particularly 'to Fig. 1, therev is shown at index d aportion of a cylinder or roll, which is adapted to be used in thevarious operations hereinbefore mentioned.l Upon the surface of roll dare a number of projections or rid es e. These projections e may takethe orm of rabbets (as in the present embodiment) or they may w be ribs,grooves, teeth, screw-like threads or the like. Y

Index a indicates the felt covering, or bandage, for the roll d,Provided inv this bandage aare grooves and projections c` 65 adapted toengage the .projections e on the roll d. n

The projections e and corresponding grooves. are preferably made regular(parallel or the like regardless of the form th'ey may assume. t isdesirable (from the standpoint of manufacturing the rolls) that theprojections e be parallel to the axis of the1 cylinder d, although thisis not essentia Fig. l'illustrates a roll which is not subject u to reattorques and the like in operation; the tig t binding of the banda e aalone suicing to hold it to the roll with the aid of the projections eand the grooves c.

In Fig. 2 is illustrated a roll adapted to undergo heavy strains and thelike. In this embodiment a wire, string, rope, or the like b is threadedthrough the bandage a and the ends are securely aixed to the roll g5 din order to firmly bind the bandage a in lace.

j t will be noticed that in Fi 2 the projections e and the rooves o aredifferent in shape from the ig. l embodiment.' In the 99 need not belong, but may assume a punctiform shape, such as spikes, etc., enga ingcorresponding indentations in the ban age a.

It is to be understood at this point that the invention does notcomprise any particular shape of rojection or groove, but includes allsur ace irregularities on the rolls d adapted to secure thegbandage a inposition.

It is not necessary that the bandage a be provided with grooves orindentations. With certain forms of projections e (see Fig. 4) thebandage may be applied without .an special shaping, bound in place bywires b and engaged to be firmly held in position by the sharpprojections e on the roll d. .Because of its softness, in suchinstances, the bandage a is squeezed into the projection e. The roll, asshown in Fi 4, 1s particularly applicable on paper-mac ines Where nogreat pressure is requlred on the roll.

In view of the above, it will be seen that the several objects of theinvention are achieved and other advantageous results attained, l

As many changes could be made in carrying out the above constructionsWithout departing from the scope of the invention, it is intended thatall matter contained in the above description or shown in theaccompanying drawings shall be interpreted as illustrative and not in alimiting sense.

I claim:

l. The press roller adapted for use in paper manufacture which comprisesa roll projections on the surface of said roll, a bandage covering thesurface of said roll, and preformed indentations in said bandage adaptedto receive said projections..

2. The press roller adapted for use in paper manufacture which comprisesa roll, projections on the surface of said roll, a bandage covering thesurface of said roll, and preformed indentations in said bandage adaptedto receive said rojections, said projections beliig substantiallyparallel to the axis of said ro er.

3. The press roller adapted for use in paper manufacture which comprisesa roll, projections on the surface of said roll, a bandage covering thesurface of said roll, and preformed indent-ations in said bandageadapted to receive said projections, said indentations and projectionsbeing rectangular in form.

4. The press roller adapted for use in paper manufacttnre whichcomprises a roll, projections on the surface of said roll, a bandagecovering the surface of said roll, and preformed indentations in saidbandage adapted to receive said projections, said indentations andprojections being triangular in form,

October, 1929-.

MAX WENZEL.

